Winder



H. CROUZET WINDER Filed Aug. 2, 19 7 Oct. 3, 195

w &

Patented Oct. 3, 1950 2 UNITED STATE s' PATENT OFFICE WINDER HenriCrouzet, Riorges, France:

Application August 2, 1947, Serial No. 765,710

In France January 1-2, 1942 i Section 1, Public Law 69!), August 8, 1946Patent expires January 12, 1962 5 Claims. (Cl. 242-1 8) ,known as aribbon breaker the object of which is to remove the drawbacks due to theoverlapping of "several coils of threads forming so-called ribbon zonesor cords, said drawbacks appearing when the'diameter'of the'spoolreaches values which are multiples or submultiples of the diameter ofthe driving member constituted by the drum. It is desired to destroy theharmony between the rotation of the yarn package and the'traverseof theyarn thereacross due to the rotation of the drum and sopreventpattern'or ribbon winding upon the yarn package.

It is as a matter of fact necessary to do away with the'drawbacksarising from the formation of 'said spools in order to allow their'u'seunder advantageous conditions during the subsequent operations usingsame. a r V 3' However the-ribbon breakers provided to this day forwinders show certain drawbacks.

They'produce in particular in the'spools the formation of roundedsections that are less tightlywound and constitute'malformations whichcannot be allowed with certain categories of textiles.

Among such prior arrangements as for example in the Reece Patent1,915,241 the ribbon breakers more generally used in the formation ofconical spools are adapted to produce a slight rocking of the coneduring said'formation with a view to displacing the theoretical drivingpoint along the contact line whereby the angular speed of the coneis'constantly submitted to modification, :said cone being furthermorecarried by a pivoting arm rising gradually as the spool becomeslarger.Inall the prior forms-of execution of the operation, the rocking shaftofthe cone is rigid with the arm carrying said cone and is locatedexternally of the pivoting axis thereof.

By reason of this arrangement, the rocking axis of: the cone follows thedisplacements of the "pivoting axis as the increase in size of. thespool progresses, so as to provide a longitudinal displacement-ofthe'contact line which forms a generating line of the cone and saiddisplacement more and more important as the spool becomes larger whichleads to the malformation men-. tioned hereinabove.

On the other hand the generally du to a reciprocating control whichrocking of the cone is lacks accuracy all the more when the movement hasa-smallamplitude and is submitted to backlash.

-:-The present invention has for its object to improve such priorarrangements and to do away with the drawbacks disclosed.

-=According to the invention, the rocking axis of the cone is locatedon'the inner side of the pivoting axis of the carrier arm and assumes astationary position with reference to it whereby the amplitude of thelongitudinal displacement of the contact line remains constant whatevermay be the diameter of the cone and said displacement may be adjusted'byshifting the position of the reciprocating rectilinear movement and thiscontinuous circular movement may control simultaneously two spoolsarranged to either side of a controlling rotary shaft which leads to agreat simplification in the mechanical structure of the arrangement.

The invention will be better understood when referring to theaccompanying drawing showing a preferred embodiment as compared to priorart, given merely by way of example. In said drawing:

Figs..1 and 2 are diagrammatical elevational views at right angles toone another of the prior art of execution of a winder with a slotteddrum. Figs. 3 and 4 are similar views relating to a preferred form ofexecution of an arrangement according to the present invention.

As illustrated in the drawing, in the prior arrangement illustrated inFigs. 1 and 2, the arm a carrying thespool or cone 1) pivots in thedirection of the arrow x round the axis 0 with an amplitude increasingwith the diameter of the spool during operation. The rocking is obtainedthrough oscillation of the end a of the arm round the. axis yccoinciding. with the axis of the arm a. To thispurpose a connecting rodd rigid, with the end a, of the arm a carries a roller e adapted to movewhen the arm a, rocks round the axisc inside a slideway f slotted at g.This slideway g is arcuate and has for its center a point on the axis 0.Said slideway j is secured to a shaft h assuming a reciprocatingmovement of constant amplitude. The consequence is a rocking motion ofan amplitude at of the axis yo and consequently of the cone b; theamplitude of this displacement remains constant Whatever may be the sizeof the spool resting on the drum e, the slot 7' of'which gives thethread a guiding motion of a constant amplitude z.

The rotation :1. corresponds thereby to a longitudinal displacement ofthe generating line acting as a contact line between the drum 2' and thecone b, the amplitude of this displacement being equal to or tan a, 12being the distance between the end a and said generating line; thisdisplacement increases thus when the spool b becomes larger whichcorresponds to a shifting of said spool equal to said displacement andthe formation of a rounded and less compact spool section.

On the contrary, according to the arrangement forming the object of theinvention (Figs. 3 and 4) the rocking axis is shifted and is located atm and to said rocking axis is pivotally secured the carrier n includingthe pivoting axes cici of two opposite arms aiai carrying the spoolsthat are being formed, of which only the spool In is illustrated incooperation with the slotted drum ii. A shaft extending throughout thelength of the machine carries cams p the rotation of each of whichproduces the rocking of the corresponding carrier 12 round the rockingaxis m together with the spools carried thereby through the agency of aroller q carried by said carrier n. A spring urged pusher member 1"holds the roller q urged against its cam p and does away with anypossibility of play.

The longitudinal shifting of the spool is invariable for a givenposition of the rocking axis m with reference to the plane tangent toboth the drum i1 and the spool b1. This amplitude may thus be adjustedbetween zero and a predetermined maximum by shifting said rocking axis mbetween said plane and a predetermined extreme position at a distancefrom said plane.

Obviously and as apparent from the preceding disclosure the invention isby no means limited to the form of execution disclosed shown by way ofexample and it covers on the contrary all the embodiments falling withinthe scope of the accompanying claims.

What I claim is:

1. In a winder for threads, the provision of an arrangement forregularizing the winding operation comprising a rotary drum providedwith an oblique slot for guiding the thread across the operative breadthof the drum, a conical spool frictionally and drivably engaging the drumand on which the thread is to be wound, a radial arm to which the spoolis rotatably secured, a carrier to which the arm ispivotally secured, apivot for said carrier that is stationary with reference to andperpendicular to the axis of the drum and shifted longitudinally thereofwith reference to thearm and means for rocking the carrierv around itspivot between predetermined limits.

2. In'a winder for threads, the provision of an arrangement forregularising the winding operation comprising a rotary drum providedwith an oblique slot for guiding the thread across the 4 operativebreadth of the drum, a conical spool frictionally and drivably engagingthe drum and on which the thread is to be Wound, a radial arm to whichthe spool is rotatably secured, a carrier to which the arm is pivotallysecured, a pivot for said carrier that is stationary with reference toand perpendicular to the axis of the drum, and shifted longitudinallythereof with reference to the arm and means for rocking the carrierround its pivot between predetermined limits and means for adjusting thelocation of the pivot with reference to th plane tangent to the drumthat passes through the line of contact between the drum and the conicalspool.

3. In a winder for threads, the provision of an arrangement forregularising the winding operation comprising a rotary drum providedwith an oblique slot for guiding the'thread across the operative breadthof the drum, a conical spool frictionally and drivably engaging the drumand on which the thread is to be wound, a radial arm to which the spoolis rotatably secured, a common carrier to which the arm is pivotallysecured, a pivot for said carrier that is stationary with reference toand perpendicular to the axis of the drum and shifted longitudinallythereof with reference to the arm, a rotary shaft parallel with the axesof the spool and drum, a cam on said shaft, a, follower carried by thecarrier and operatively engaging said cam for rocking said carrier roundits rocking pivot, means for continuously driving the last mentionedshaft and a yielding stop for the carrier.

4. In a winder for threads, the provision of an arrangement forregularising the winding operation comprising a pair of rotary drumseach provided with an oblique slot for guiding the thread across theoperative breadth of the drum, a pair of conical spools frictionally anddrivably engaging the drums and on which the thread is to be wound, acommon carrier for said spools, a pivot for said carrier that isstationary'with reference to and perpendicular to the axis of' the drum,and means'for rocking the carrier round its pivot between predeterminedlimits.

5. In a winder for threads, the provision of an arrangement forregularising the winding operation comprising a pair of drums, eachprovided with an oblique slot for guiding the thread across theoperative breadth of the drum, a pair of conical spools frictionally anddrivably engaging the corresponding drums and on which the thread is tobe wound, a common carrier to which the arms are pivotally secured, apivot for said carreference to the plane tangent to the drum that passesthrough the line of contact between the drum and the conical spool.

HENRI CROUZET.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Name 7 I Date Reece June 20, 1933 Number

